When a service is provided, one usually feels compelled to offer support to keep that service operational.
The explanation of where the money goes is easily found in the donation page that Nicolette cited for you. If you'll notice, the server costs are always covered by members who already feel appreciative for this resource. There is no pressure to donate. You may use the resource for free. I am glad to support it on your behalf, and on the behalf of anyone who comes here with the sincere desire to learn more about their own or their loved one's PTSD. Part of the reason that I donate is for the visitors who read the site and yet, for whatever reason, they are reticent to join and participate.
I notice that the forum is fully supported each month because I would increase my donation if it weren't. It makes me happy to see that other members like this resource enough to support it financially. I don't think I'm alone in that feeling. So, please, feel free to use this resource for as long as you need without donating. If you are changed by it, you may feel appreciative someday, and you may be able to express your appreciation in the form of a monetary donation without feeling suspicious about where it is going. Until then, and perhaps forever, consider this site open to you free of charge.
On the chance that you are a troll, our community is very protective of one another and we don't care what your challenges are when it comes to being abusive to others. Many times sufferers are abusive as their defenses have been built up and their paranoia creates the appearance that they need to lash out. This is no excuse. We, as a community, require that the members here behave with a social conscience. Most of us are victims of some pretty horrific abuses by authority figures and others, many of them had challenges of their own which led to them abusing us. So, having a troll in the community is unhealthy for us all, and we just don't tolerate it.
Take some time to look around the forum and get to know us. Decide for yourself if you want to participate in this community or if you'd rather pass. Share some of your story and offer some support to those of us with similar experiences. How we respond to you is dependent on how you treat us, even if we are a pretty understanding group of people. We won't be abused again, not even by one of our own.